The amount of freedom we have with our laptop computers these days compared to a decade ago is remarkable. Thanks to Wi-Fi and even more so now with 3G networks, we can access the internet from almost anywhere. But what if all those electromagnetic waves are undesirable to you? Then perhaps blinking lights are more to your liking.
Chinese scientists have demonstrated a wireless networking method which uses blue LEDs that transmit data by modulating flicker rate. The LED lights can double as lighting as the blinking is imperceptible by the human eye.
The speed so far achieved through blinking lights is 2Mbps, which is quite sluggish by today's other wireless standards. Also, instead of worrying about radio signal interference, now the concern will be the blocking of light transmission.
Still, it's an interesting concept. Read more from the Beijing Times.